Google got Java libraries for most of their APIs, and for developing over App Engine. Blackberry and Android got mini Java sdk for developing movile apps. Or

Google got Java libraries for most of their APIs, and for developing over App Engine. Blackberry and Android got mini Java sdk for developing movile apps. Or if you want to develop over Cloud Computer systems you might want to give it a try to Hadoop, that is also written in Java. So, yes, there are tons of real implementations in Java, even though is not a language I could say I love...